By Bradley Jolly Meghan Markle and Prince Harry must “poke fun at themselves” if they intend to change their public image this year, a PR expert said. The Duke and Duchess of Sussex should “allow themselves to get roasted” in order to change public perception in 2024, Ryan McCormick, who is a public relations guru, stressed. Since stepping down from royal duties back in 2020, the duo have had a tense relationship with the Royal Family. In the four years since, the couple have continued their passion to shine a light on issues close to them – and experienced heartache. But Mr McCormick said the…